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A series of volumetric flasks are being prepared for the analysis of mercury in the drinking...

A series of volumetric flasks are being prepared for the analysis of mercury in the drinking water supply using the method of standard addition. To prepare the flasks, 10 mL of drinking water and a varying amount of standard are added to each flask, and the flasks are brought to the 25.00mL mark on the volumetric flask.

The concentration of mercury standard used was 20.0 microgram/mL.

Please use the data tabulated below to provide the concentration of mercury in the drinking water, in units of micrograms/mL.

It is recommended to use Excel or similar software.

mL Mercury Standard Added Signal
0.00 19.65
1.00 30.35
2.00 40.28
3.00 49.78
4.00 60.44
5.00 70.0

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